Create core profile contexts with WGL when --enable-unsafe-es3-apis is used.

ui/gl/gl_bindings_api_autogen_wgl.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // This file is auto-generated from
 // ui/gl/generate_bindings.py
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
 BOOL wglChoosePixelFormatARBFn(HDC dc,
                                const int* int_attrib_list,
                                const float* float_attrib_list,
                                UINT max_formats,
                                int* formats,
                                UINT* num_formats) override;
 BOOL wglCopyContextFn(HGLRC hglrcSrc, HGLRC hglrcDst, UINT mask) override;
 HGLRC wglCreateContextFn(HDC hdc) override;
+HGLRC wglCreateContextAttribsARBFn(HDC hDC,
+                                   HGLRC hShareContext,
+                                   const int* attribList) override;
 HGLRC wglCreateLayerContextFn(HDC hdc, int iLayerPlane) override;
 HPBUFFERARB wglCreatePbufferARBFn(HDC hDC,
                                   int iPixelFormat,
                                   int iWidth,
                                   int iHeight,
                                   const int* piAttribList) override;
 BOOL wglDeleteContextFn(HGLRC hglrc) override;
 BOOL wglDestroyPbufferARBFn(HPBUFFERARB hPbuffer) override;
 HGLRC wglGetCurrentContextFn() override;
 HDC wglGetCurrentDCFn() override;
 const char* wglGetExtensionsStringARBFn(HDC hDC) override;
 const char* wglGetExtensionsStringEXTFn() override;
 HDC wglGetPbufferDCARBFn(HPBUFFERARB hPbuffer) override;
 BOOL wglMakeCurrentFn(HDC hdc, HGLRC hglrc) override;
 BOOL wglQueryPbufferARBFn(HPBUFFERARB hPbuffer,
                           int iAttribute,
                           int* piValue) override;
 int wglReleasePbufferDCARBFn(HPBUFFERARB hPbuffer, HDC hDC) override;
 BOOL wglShareListsFn(HGLRC hglrc1, HGLRC hglrc2) override;
 BOOL wglSwapIntervalEXTFn(int interval) override;
 BOOL wglSwapLayerBuffersFn(HDC hdc, UINT fuPlanes) override;